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-rw-r--r--include/vcl/opengl/OpenGLContext.hxx188
-rw-r--r--include/vcl/opengl/OpenGLHelper.hxx126
-rw-r--r--include/vcl/opengl/OpenGLWrapper.hxx41
3 files changed, 355 insertions, 0 deletions
diff --git a/include/vcl/opengl/OpenGLContext.hxx b/include/vcl/opengl/OpenGLContext.hxx
new file mode 100644
index 000000000..c6807a6fe
--- /dev/null
+++ b/include/vcl/opengl/OpenGLContext.hxx
@@ -0,0 +1,188 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_VCL_OPENGL_OPENGLCONTEXT_HXX
+#define INCLUDED_VCL_OPENGL_OPENGLCONTEXT_HXX
+
+#include <epoxy/gl.h>
+
+#include <vcl/dllapi.h>
+#include <vcl/syschild.hxx>
+#include <rtl/ref.hxx>
+
+#include <memory>
+#include <unordered_map>
+
+class OpenGLFramebuffer;
+class OpenGLProgram;
+class OpenGLTexture;
+class RenderState;
+
+/// Holds the information of our new child window
+struct VCL_DLLPUBLIC GLWindow
+{
+ unsigned int Width;
+ unsigned int Height;
+ bool bMultiSampleSupported;
+
+ GLWindow()
+ : Width(0)
+ , Height(0)
+ , bMultiSampleSupported(false)
+ {
+ }
+
+ virtual bool Synchronize(bool bOnoff) const;
+
+ virtual ~GLWindow();
+};
+
+struct VCL_DLLPUBLIC OpenGLCapabilitySwitch
+{
+ bool mbLimitedShaderRegisters;
+
+ OpenGLCapabilitySwitch()
+ : mbLimitedShaderRegisters(false)
+ {}
+};
+
+class VCL_DLLPUBLIC OpenGLContext
+{
+ friend class OpenGLTests;
+protected:
+ OpenGLContext();
+public:
+ static rtl::Reference<OpenGLContext> Create();
+ virtual ~OpenGLContext();
+ void acquire() { mnRefCount++; }
+ void release() { if ( --mnRefCount == 0 ) delete this; }
+ void dispose();
+
+ void requestLegacyContext();
+
+ bool init(vcl::Window* pParent);
+
+ void reset();
+
+ // use these methods right after setting a context to make sure drawing happens
+ // in the right FBO (default one is for onscreen painting)
+ void BindFramebuffer( OpenGLFramebuffer* pFramebuffer );
+ void AcquireDefaultFramebuffer();
+ OpenGLFramebuffer* AcquireFramebuffer( const OpenGLTexture& rTexture );
+ static void ReleaseFramebuffer( OpenGLFramebuffer* pFramebuffer );
+ void UnbindTextureFromFramebuffers( GLuint nTexture );
+ static bool IsTextureAttachedAnywhere( GLuint nTexture );
+
+ void ReleaseFramebuffer( const OpenGLTexture& rTexture );
+ void ReleaseFramebuffers();
+
+ // retrieve a program from the cache or compile/link it
+ OpenGLProgram* GetProgram( const OUString& rVertexShader, const OUString& rFragmentShader, const OString& preamble = "" );
+ OpenGLProgram* UseProgram( const OUString& rVertexShader, const OUString& rFragmentShader, const OString& preamble = "" );
+
+ RenderState& state()
+ {
+ return *mpRenderState;
+ }
+
+ OpenGLCapabilitySwitch& getOpenGLCapabilitySwitch()
+ {
+ return maOpenGLCapabilitySwitch;
+ }
+
+ /// Is this GL context the current context ?
+ virtual bool isCurrent();
+ /// Is any GL context the current context ?
+ virtual bool isAnyCurrent();
+ /// release bound resources from the current context
+ static void clearCurrent();
+ /// release contexts etc. before (potentially) allowing another thread run.
+ static void prepareForYield();
+ /// Is there a current GL context ?
+ static bool hasCurrent();
+
+ /// make a VCL context (any context) current, create it if necessary.
+ static void makeVCLCurrent();
+ /// fetch any VCL context, creating one if bMakeIfNecessary is set.
+ static rtl::Reference<OpenGLContext> getVCLContext(bool bMakeIfNecessary = true);
+ /// make this GL context current - so it is implicit in subsequent GL calls
+ virtual void makeCurrent();
+ /// Put this GL context to the end of the context list.
+ void registerAsCurrent();
+ /// reset the GL context so this context is not implicit in subsequent GL calls.
+ virtual void resetCurrent();
+ /// unbind the GL_FRAMEBUFFER to its default state, needed for gtk3
+ virtual void restoreDefaultFramebuffer();
+ virtual void swapBuffers();
+ virtual void sync();
+ void show();
+
+ void setWinPosAndSize(const Point &rPos, const Size& rSize);
+ virtual const GLWindow& getOpenGLWindow() const = 0;
+
+ SystemChildWindow* getChildWindow();
+ const SystemChildWindow* getChildWindow() const;
+
+ bool isInitialized() const
+ {
+ return mbInitialized;
+ }
+
+ /// VCL promiscuously re-uses its own contexts:
+ void setVCLOnly() { mbVCLOnly = true; }
+ bool isVCLOnly() const { return mbVCLOnly; }
+
+ virtual SystemWindowData generateWinData(vcl::Window* pParent, bool bRequestLegacyContext);
+
+private:
+ virtual void initWindow();
+ virtual void destroyCurrentContext();
+ virtual void adjustToNewSize();
+
+protected:
+ bool InitGL();
+ static void InitGLDebugging();
+ static void InitChildWindow(SystemChildWindow *pChildWindow);
+ static void BuffersSwapped();
+ virtual GLWindow& getModifiableOpenGLWindow() = 0;
+ virtual bool ImplInit();
+
+ VclPtr<vcl::Window> m_xWindow;
+ VclPtr<vcl::Window> mpWindow; //points to m_pWindow or the parent window, don't delete it
+ VclPtr<SystemChildWindow> m_pChildWindow;
+ bool mbInitialized;
+ int mnRefCount;
+ bool mbRequestLegacyContext;
+ bool mbVCLOnly;
+
+ int mnFramebufferCount;
+ OpenGLFramebuffer* mpCurrentFramebuffer;
+ OpenGLFramebuffer* mpFirstFramebuffer;
+ OpenGLFramebuffer* mpLastFramebuffer;
+
+ OpenGLCapabilitySwitch maOpenGLCapabilitySwitch;
+
+private:
+ typedef std::unordered_map< OString, std::shared_ptr<OpenGLProgram> > ProgramCollection;
+ ProgramCollection maPrograms;
+ OpenGLProgram* mpCurrentProgram;
+
+ std::unique_ptr<RenderState> mpRenderState;
+
+public:
+ vcl::Region maClipRegion;
+
+ // Don't hold references to ourselves:
+ OpenGLContext *mpPrevContext;
+ OpenGLContext *mpNextContext;
+};
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/include/vcl/opengl/OpenGLHelper.hxx b/include/vcl/opengl/OpenGLHelper.hxx
new file mode 100644
index 000000000..4f365c2e4
--- /dev/null
+++ b/include/vcl/opengl/OpenGLHelper.hxx
@@ -0,0 +1,126 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+#ifndef INCLUDED_VCL_OPENGL_OPENGLHELPER_HXX
+#define INCLUDED_VCL_OPENGL_OPENGLHELPER_HXX
+
+#include <epoxy/gl.h>
+#include <sal/detail/log.h>
+#include <vcl/dllapi.h>
+#include <vcl/bitmapex.hxx>
+
+#include <rtl/ustring.hxx>
+#include <sstream>
+
+/// Helper to do a SAL_INFO as well as a GL log.
+#define VCL_GL_INFO(stream) \
+ do { \
+ if (SAL_DETAIL_ENABLE_LOG_INFO && OpenGLHelper::isVCLOpenGLEnabled()) \
+ { \
+ ::std::ostringstream detail_stream; \
+ detail_stream << stream; \
+ OpenGLHelper::debugMsgStream(detail_stream); \
+ } \
+ } while (false)
+
+/// Helper to do a SAL_WARN as well as a GL log.
+#define VCL_GL_WARN(stream) \
+ do { \
+ if (SAL_DETAIL_ENABLE_LOG_INFO && OpenGLHelper::isVCLOpenGLEnabled()) \
+ { \
+ ::std::ostringstream detail_stream; \
+ detail_stream << stream; \
+ OpenGLHelper::debugMsgStreamWarn(detail_stream); \
+ } \
+ } while (false)
+
+// All member functions static and VCL_DLLPUBLIC. Basically a glorified namespace.
+struct VCL_DLLPUBLIC OpenGLHelper
+{
+ OpenGLHelper() = delete; // Should not be instantiated
+
+public:
+
+ static OString GetDigest(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const OString& preamble );
+
+ static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const OUString& rGeometryShaderName, const OString& preamble, const OString& rDigest );
+ static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const OString& preamble, const OString& rDigest );
+ static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName, const OUString& rGeometryShaderName);
+ static GLint LoadShaders(const OUString& rVertexShaderName, const OUString& rFragmentShaderName);
+
+ /**
+ * The caller is responsible for allocating the memory for the buffer before calling
+ * this method. The buffer size is assumed to be 4*width*height and the format
+ * to be OptimalBufferFormat().
+ **/
+ static BitmapEx ConvertBufferToBitmapEx(const sal_uInt8* const pBuffer, long nWidth, long nHeight);
+ /**
+ * Returns the optimal buffer format for OpenGL (GL_BGRA or GL_RGBA).
+ **/
+ static GLenum OptimalBufferFormat();
+ static void renderToFile(long nWidth, long nHeight, const OUString& rFileName);
+
+ static const char* GLErrorString(GLenum errorCode);
+
+ /**
+ * The caller is responsible for deleting the buffer objects identified by
+ * nFramebufferId, nRenderbufferDepthId and nRenderbufferColorId.
+ * This create a buffer for rendering to texture and should be freed with
+ * glDeleteTextures.
+ *
+ * @param nWidth Width of frame
+ * @param nHeight Height of frame
+ * @param nFramebufferId FrameBuffer ID
+ * @param nRenderbufferDepthId RenderBuffer's depth ID
+ * @param nRenderbufferColorId RenderBuffer's color ID
+ */
+ static void createFramebuffer(long nWidth, long nHeight, GLuint& nFramebufferId,
+ GLuint& nRenderbufferDepthId, GLuint& nRenderbufferColorId);
+
+ /// Get OpenGL version (needs a context)
+ static float getGLVersion();
+
+ static void checkGLError(const char* aFile, size_t nLine);
+
+ /**
+ * Insert a glDebugMessage into the queue - helpful for debugging
+ * with apitrace to annotate the output and correlate it with code.
+ */
+#if defined __GNUC__
+ __attribute__ ((format (printf, 2, 3)))
+#endif
+ static void debugMsgPrint(const int nType, const char *pFormat, ...);
+ static void debugMsgStream(std::ostringstream const &pStream);
+ static void debugMsgStreamWarn(std::ostringstream const &pStream);
+
+ /**
+ * checks if the device/driver pair is on our OpenGL blacklist
+ */
+ static bool isDeviceBlacklisted();
+
+ /**
+ * checks if the system supports all features that are necessary for the OpenGL VCL support
+ */
+ static bool supportsVCLOpenGL();
+
+ /**
+ * Returns true if VCL has OpenGL rendering enabled
+ */
+ static bool isVCLOpenGLEnabled();
+};
+
+#ifdef SAL_LOG_WARN
+#define CHECK_GL_ERROR() OpenGLHelper::checkGLError(__FILE__, __LINE__)
+#else
+#define CHECK_GL_ERROR() do { } while (false)
+#endif
+
+#endif
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
diff --git a/include/vcl/opengl/OpenGLWrapper.hxx b/include/vcl/opengl/OpenGLWrapper.hxx
new file mode 100644
index 000000000..c84286ea5
--- /dev/null
+++ b/include/vcl/opengl/OpenGLWrapper.hxx
@@ -0,0 +1,41 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+// Fully wrapped methods that have no exotic GL header deps.
+
+#ifndef INCLUDED_VCL_OPENGL_OPENGLWRAPPER_HXX
+#define INCLUDED_VCL_OPENGL_OPENGLWRAPPER_HXX
+
+#include <config_features.h>
+#include <vcl/dllapi.h>
+
+// All member functions static and VCL_DLLPUBLIC. Basically a glorified namespace.
+struct VCL_DLLPUBLIC OpenGLWrapper
+{
+ OpenGLWrapper() = delete; // Should not be instantiated
+
+ /**
+ * Returns true if VCL has OpenGL rendering enabled
+ */
+#if HAVE_FEATURE_UI
+ static bool isVCLOpenGLEnabled();
+
+ /**
+ * Returns the number of times OpenGL buffers have been swapped.
+ */
+ static sal_Int64 getBufferSwapCounter();
+#else
+ static bool isVCLOpenGLEnabled()
+ {
+ return false;
+ }
+#endif
+};
+
+#endif // INCLUDED_VCL_OPENGL_OPENGLWRAPPER_HXX
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